Happy Birthday, Dad!

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Across
  1. 2. What's missing? White, green, red polka dots, ______
  2. 3. Chicken of the cave
  3. 4. Rhymes with doofus
  4. 6. Jewel of the Val di Chiana
  5. 8. Sanguine
Down
  1. 1. The Lohner-______ was the world's first electric vehicle, in 1900
  2. 3. Each day, 15 million people celebrate theirs
  3. 4. Mysterious collectibles
  4. 5. There once was a mosquito from _____
  5. 7. Paterfamilias